Lucille is finding it difficult to play soccer after school. her doctor thinks that her cells might not be getting enough oxygen. when lucille talked about it with a friend, her friend said there might be a problem with lucille’s respiratory system or circulatory system. what do lucille’s cells need in order for her body to function properly? how might a problem with lucille’s respiratory system or circulatory system make it difficult for lucille to play soccer?

ezra eats a cheese sandwich for lunch. cheese contains a lot of protein, and bread is mostly starch. ezra plans to play basketball later in the afternoon. he is breathing normally.

what does ezra need from the food he ate and the air he breathes so that he can play basketball? how do ezra’s body systems work together to get the molecules he needs into his cells? how do his cells use these molecules to release energy for his body to run?

an energy transformation flow diagram is shown

where is it ?

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.